CN2418550Y - Waterproof device for LED display - Google Patents

Abstract

A water-proof device for LED display is composed of a lamp box with front end relative to the front end of LED, a transparent partition plate, an external plate with multiple through holes relative to LED, and a shielding edge extended forward from the through holes on front end of plate.

Description

Waterproof device for LED display

The utility model relates to a waterproof device for a light-emitting diode display, in particular to a waterproof structure for the front-end structure of a light-emitting diode (LED) display used as a large display screen outdoors.

Advertisement is an important item in marketing activities. Currently, it is common in advertisements at important intersections. In addition to printing and drawing advertising boards, there are also advertising screens using LED displays. Among them, LED display advertising screens use multiple LEDs in the Under the operation control of relevant hardware and software programs, it will turn on and off in sequence according to people's preset patterns, so that the LED display screen will present a dynamic (such as a revolving lantern) advertising effect.

Existing light-emitting diode displays nowadays, as shown in Figure 3 and Figure 4, are to establish a circuit board 21 that comprises a plurality of electronic components and related circuits in a hollow light box 20, and the front surface of the circuit board 21 is installed and partitioned into multiple parts. A group of light-emitting diodes 22, because the light-emitting diode display is installed outdoors, so in order to avoid short-circuit caused by rainwater intrusion into the display, generally the front surface of the circuit board 21 with light-emitting diodes 22 will be filled with glue. A waterproof glue layer 23 is covered. The production process of this method of glue filling between the circuit board and the light-emitting diode is cumbersome and difficult to maintain and control, and it is easy to cause deviations in the waterproof effect because the waterproof glue is not filled; The waterproof glue around the damaged light-emitting diode can be replaced only after being removed, and then filled with waterproof glue after updating. Therefore, under the combination of old and new glue, not only the surface is uneven and the appearance is not good, but also because the new and old glue are not easy to completely fuse to form a joint. Seams reduce their water resistance. Furthermore, since the large-scale LED display is installed outdoors, and its LEDs and waterproof glue are directly exposed to the outside, external wind, sun, and rain will accelerate the aging of the waterproof glue, and because the LEDs and waterproof glue It is two kinds of materials with different thermal expansion coefficients, that is, in the outdoor environment where the temperature difference between day and night changes greatly, the interface between the two is easy to peel off, so that rainwater or water vapor can easily penetrate into the electrode connection between the circuit board and the light-emitting diode through capillary phenomenon. And problems such as oxidation, corrosion or short circuit will accelerate the damage of the display.

The main purpose of the utility model is to provide a waterproof device for a light-emitting diode display, so as to improve the waterproof performance of the display and improve the ease of maintenance.

Another object of the present invention is to provide a waterproof device for a light-emitting diode display, which can prevent the display screen from being reflected by sunlight and improve the clarity of the display screen.

The technical scheme of the utility model is to provide a waterproof device for a light-emitting diode display, which has a hollow light box with an opening facing forward, and a circuit board containing a plurality of light-emitting diodes is arranged in the light box. Partition plate and an outer plate, the outer plate located on the outer side is provided with a plurality of through holes facing the light-emitting diodes of the circuit board, and the upper edge of each through hole on the front surface of the plate is extended forward, and the periphery of the outer plate is additionally covered with waterproof glue Adhesive and fixed on the front of the light box.

The above-mentioned waterproof device of the light-emitting diode display is characterized in that the transparent partition can be a transparent board made of polyvinyl chloride (PVC).

The above waterproof device for LED display is characterized in that the inner surface of the transparent partition opposite to the LED is a smooth surface, and the outer surface is a matte surface.

It can be seen from the above that when the light-emitting diode is located in the light box, it can be isolated by the transparent partition set at the front of the light box and the outer plate on the outside, and the periphery of the light box and the outer plate is sealed by silicone and the partition is fixed in the light box. The light-emitting diodes and circuit boards in the light box are not exposed, and they form an excellent waterproof effect under layer upon layer of protection; in terms of maintenance, only need to remove the waterproof silica gel sealed on the light box, outer panels, and partitions. The outer panel and partition can be used to update and repair the light-emitting diodes and circuit boards. After the replacement and maintenance are completed, the transparent partition and outer panel can be assembled and re-coated with waterproof silicone around the periphery to complete the maintenance work easily. . In addition, the utility model adopts the design of the fog surface on the outside of the transparent partition, which can avoid the reflection of the display screen due to sunlight, and the outer panel is extended to the top of the light-emitting diodes to improve the darkness around the light-emitting diodes. The clarity of the display.

Further illustrate concrete structural feature and purpose of the present utility model below in conjunction with accompanying drawing, accompanying drawing wherein is:

Fig. 1 is the three-dimensional exploded schematic view of the utility model;

Fig. 2 is a combined sectional schematic diagram of the utility model;

FIG. 3 is a three-dimensional exploded schematic diagram of a conventional light-emitting diode display; and

FIG. 4 is a combined cross-sectional schematic diagram of a conventional light-emitting diode display.

First please refer to FIG. 1 and FIG. 2 , the light emitting diode display of the present invention includes: a light box 10 , a circuit board 11 including a plurality of light emitting diodes 12 , a transparent partition 13 and an outer plate 14 . Wherein, light box 10 is a box body of a hollow shape, and the back side of circuit board 11 that comprises a plurality of light-emitting diodes 12 is provided with the electronic assembly that can control light-emitting diodes 12 and relevant circuit, and the light-emitting diodes 12 that are arranged at the front of circuit board 11 distinguish Form multiple groups and install on the circuit board 11 in an array, and turn on and off under the control of the preset program. The transparent partition 13 is a flat plate in the shape of the front port of the light box 10, and is fixed at the front end of the light box 10. The transparent partition 13 can be a transparent board made of polyvinyl chloride (PVC), and the inner side relative to the light-emitting diode 12 can be a smooth surface, and the outer side is a matte surface to avoid reflections caused by sunlight. Plate 14 is also the plate body of relative light box 10 front port shapes, and its plate body is provided with a plurality of through holes 141 of each LED 12 groups on the relative circuit board 11, and on each through hole 141 of plate body front face A eaves 142 is extended to the front of the edge, and it is covered at the front port of the light box 10 and fixed with waterproof silica gel 15 at the peripheral junction, which constitutes the waterproof device of the light-emitting diode display of the present invention.

The light-emitting diode display of the present utility model can be applied outdoors as an advertising billboard, so that the light-emitting diodes 12 can be displayed on and off in sequence according to people's preset patterns under the operation control of related hardware and software programs, and can be displayed on the display through the transparent partition 13. The screen presents a dynamic visual effect. In addition, when the display is in use, because the outer surface of the transparent partition 13 is treated with a matte surface, it can avoid the problem that the display screen is not clear due to reflection due to sunlight. The eaves 142 block the light by the eaves 142, making the periphery of the light-emitting diodes 12 located inside darker than the outside, thereby improving the clarity of the display screen.

Claims (3)

1. A waterproof device for a light-emitting diode display, the device has a hollow light box with an opening facing forward, and a circuit board containing a plurality of light-emitting diodes is arranged in the light box, and it is characterized in that a transparent partition is arranged at the front port of the light box board and an outer board, the outer board located on the outer side is provided with a plurality of through holes facing the light-emitting diodes of the circuit board, and the upper edge of each through hole on the front surface of the board is extended forward, and the outer board is surrounded by waterproof The adhesive device is fixed on the front end of the light box. 2. The waterproof device for light-emitting diode displays according to claim 1, wherein the transparent partition can be a transparent board made of polyvinyl chloride (PVC). 3. The waterproof device for a light-emitting diode display according to claim 1 or 2, wherein the inner side of the transparent partition opposite to the light-emitting diode is a smooth surface, and the outer side is a matte surface.

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